Мақола

Cosmokinetics: a joint analysis of standard candles, rulers and cosmic clocks

Remya NairCentre for Theoretical Physics, Jamia Millia Islamia, New Delhi 110025, IndiaSanjay JhinganCentre for Theoretical Physics, Jamia Millia Islamia, New Delhi 110025, IndiaDeepak JainDeen Dayal Upadhyaya College, University of Delhi, New Delhi 110015, India

2012en

ABI

Аннотация

We study the accelerated expansion of the universe by using the kinematic approach. In this context, we parameterize the deceleration parameter, q(z), in a model independent way. Assuming three simple parameterizations we reconstruct q(z). We do the joint analysis with combination of latest cosmological data consisting of standard candles (Supernovae Union2 sample), standard ruler (CMB/BAO), cosmic clocks (age of passively evolving galaxies) and Hubble (H(z)) data. Our results support the accelerated expansion of the universe.

Идентификаторлар

DOI: 10.1088/1475-7516/2012/01/018

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